7985879 has 12 divisors (see below), whose sum is σ = 9065280. Its totient is φ = 7022400.

The previous prime is 7985851. The next prime is 7985893. The reversal of 7985879 is 9785897.

It is not a de Polignac number, because 7985879 - 2¹² = 7981783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7985879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7985839) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2687 + ... + 4815.

It is an arithmetic number, because the mean of its divisors is an integer number (755440).

Almost surely, 2^7985879 is an apocalyptic number.

7985879 is a deficient number, since it is larger than the sum of its proper divisors (1079401).

7985879 is a wasteful number, since it uses less digits than its factorization.

7985879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182 (or 2171 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 53.

The square root of 7985879 is about 2825.9297585043. The cubic root of 7985879 is about 199.8822556950.

It can be divided in two parts, 79 and 85879, that added together give a palindrome (85958).

The spelling of 7985879 in words is "seven million, nine hundred eighty-five thousand, eight hundred seventy-nine".